:root { --ink: #1C2733; --sub: #6A7684; --primary: #1B7FD9; --sky: #5BB8F5; --tint: #F3F9FF; --line: #E6ECF2; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px 16px;
  background: linear-gradient(180deg, #FFFFFF 0%, var(--tint) 100%); color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
main { max-width: 440px; width: 100%; text-align: center; }
.logo { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 28px; }
.logo span { font-size: 34px; font-weight: 800; letter-spacing: -0.5px; }
h1 { font-size: 30px; line-height: 1.2; letter-spacing: -0.5px; margin: 0 0 12px; }
p { font-size: 17px; line-height: 1.55; color: var(--sub); margin: 0 0 16px; }
.small { font-size: 14px; margin-top: 36px; }